Thanks in advance for any help

My issue:
I have a slide presentation and on each page I have a header text box (i.e. a text box with a background color and text that is as wide as the page and an inch thick) that I want to be positioned at the top of each page. As of now, I have to move the header box up using
\vspace
depending on how much text is on the page below the header text box. I would like the header text box to be at the top of the page regardless of what else is on the page.David